The invertebrate species (meaning animal species without a backbone) that form the prey base for an ecosystem. Two important forage invertebrates include krill and market squid.

Map of Regions

A map showing the locations of spring season net samples by CalCOFI for use in analyses of abundance and trends in pelagic resources. Channel Islands National Marine Sanctuary region (red) includes CalCOFI stations inside and adjacent to CINMS; and Southern California Shelf (yellow) includes all CalCOFI stations over the shelf. Figure credit: A. Thompson/NOAA, Ben Best/EcoQuants.

Market Squid

Figures showing the average abundance of market squid (Doryteuthis opalescens) collected in CalCOFI net samples taken only at sites in the Channel Islands National Marine Sanctuary region (top) and all sites over the Southern California Shelf (bottom) from 1997 to 2015. Click the map tab to compare the two sampling regions. Figure credit: A. Thompson/NOAA

Figures showing the average abundance of market squid (Doryteuthis opalescens) collected in CalCOFI net samples taken only at sites in the Channel Islands National Marine Sanctuary region (top) and all sites over the Southern California Shelf (bottom) from 1997 to 2015. Click the map tab to compare the two sampling regions. Figure credit: A. Thompson/NOAA

Click for Details Horizontal lines show the mean (dashed line) ± 1.0 standard deviation (solid lines) over the full time series. Symbol at upper right indicates whether data over the last five years (green shaded areas) had a positive trend (up arrow), a negative trend (down arrow), or no trend (↔). Symbol at lower right indicates whether the mean over the past five years was greater than (+), less than (–), or within 1 standard deviation (●) of the mean of the full time series. Data source: CalCOFI; Figure: A. Thompson/NOAA For more information, consult Figure App.F.12.20.squid in the CINMS 2016 Condition Report.

Krill

CINMS Region

Data not available (yet)

SoCal Shelf Region

Data not available (yet)